The Westminster St George's by-election of 1921 was held on 7 June 1921.Craig, F.W.S. (1977) British Parliamentary Election Results 1918-1949. Macmillan: London. The by-election was held due to the elevation to the peerage of the incumbent Coalition Conservative MP, Walter Long. It was won by the Anti-Waste League candidate James Malcolm Monteith Erskine.
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